CHEM110 Week 4 Exam 2 (Sept 2026)

[SOLVED] CHEM110 Week 4 Exam 2 (Sept 2026)

                                                                  [SOLVED] CHEM110 Week 4 Exam 2 (Sept 2026)

In a solution of potassium chloride in water, what is the solvent?
A. Potassium chloride
B. Only chlorine
C. Only potassium
D. Water ✅
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According to the Brønsted-Lowry definition, which statement is true about a base?
A. It increases H⁺ concentration in water
B. It accepts an electron pair
C. It accepts a proton (H⁺) ✅
D. It donates a proton (H⁺)
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A solution with a pH of 2 is:
Acidic ✅
Basic
Neutral
Balanced
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What is the molarity of a solution made by dissolving 10 g of NaOH in 0.5 L of water?
10 g / 40.00 g / 0.5 L = 0.50 M ✅
1. 10 g
2. 40.00 g
3. 0.5 L
4. 0.50 M ✅
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What is the conjugate base of H₂S?
A. S²⁻
B. H₂O
C. OH⁻
D. HS⁻ ✅
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Which pair of substances forms a buffer system?
Answers: A – D
A. H₂PO₄⁻ and HPO₄²⁻ ✅
B. H₂ and N₂
C. NaOH and Mg(OH)₂
D. H₂SO₄ and H₂…………………………………………purchase all the questions and answers at $40 only